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General | Insiders | Insider Transactions | Monthly Overview | Weekly Overview

Overview of all insider trading transactions in GENZYME CORP. Get notifications about new insider transactions in GENZYME CORP for free.

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Date	Ticker	Company	Owner	Relationship	Transaction	Code	Cost ($)	Shares	Transaction Value ($)	Total Shares	% Holdings
Nov 18 2004	GENZ	GENZYME CORP	COLLIER EARL M JR	Executive Vice Pres ...	Option Exercise	M	29.44	20,000	588,800	151,725
Nov 18 2004	GENZ	GENZYME CORP	COLLIER EARL M JR	Executive Vice Pres ...	Sell	S	55.60	20,000	1,112,000	0	20 K to 0 (-100.00 %)
Nov 18 2004	GENZ	GENZYME CORP	COLLIER EARL M JR	Executive Vice Pres ...	Buy	M	29.44	20,000	588,800	20,000	0 to 20 K
Nov 18 2004	GENZ	GENZYME CORP	COLLIER EARL M JR	Executive Vice Pres ...	Sell	S	55.60	1,376	76,506	0	1.4 K to 0 (-100.00 %)
Nov 18 2004	GENZ	GENZYME CORP	COLLIER EARL M JR	Executive Vice Pres ...	Option Exercise	M	29.44	20,000	588,800	151,725
Nov 18 2004	GENZ	GENZYME CORP	COLLIER EARL M JR	Executive Vice Pres ...	Sell	S	55.60	20,000	1,112,000	0	20 K to 0 (-100.00 %)
Nov 18 2004	GENZ	GENZYME CORP	COLLIER EARL M JR	Executive Vice Pres ...	Buy	M	29.44	20,000	588,800	20,000	0 to 20 K
Nov 18 2004	GENZ	GENZYME CORP	COLLIER EARL M JR	Executive Vice Pres ...	Sell	S	55.60	1,376	76,506	0	1.4 K to 0 (-100.00 %)
Nov 15 2004	GENZ	GENZYME CORP	SMITH ALAN E	Senior Vice Preside ...	Option Exercise	M	14.00	31,818	445,452	0
Nov 15 2004	GENZ	GENZYME CORP	SMITH ALAN E	Senior Vice Preside ...	Sell	S	55.62	31,818	1,769,717	30,941	62.8 K to 30.9 K (-50.70 %)
Nov 15 2004	GENZ	GENZYME CORP	SMITH ALAN E	Senior Vice Preside ...	Buy	M	14.00	31,818	445,452	62,759	30.9 K to 62.8 K (+102.83 %)
Nov 23 2004	GENZ	GENZYME CORP	SMITH ALAN E	Senior Vice Preside ...	Option Exercise	M	13.78	15,269	210,407	15,269
Nov 23 2004	GENZ	GENZYME CORP	SMITH ALAN E	Senior Vice Preside ...	Sell	S	56.00	15,269	855,064	30,941	46.2 K to 30.9 K (-33.04 %)
Nov 23 2004	GENZ	GENZYME CORP	SMITH ALAN E	Senior Vice Preside ...	Buy	M	13.78	15,269	210,407	46,210	30.9 K to 46.2 K (+49.35 %)
Nov 10 2004	GENZ	GENZYME CORP	TERMEER HENRI A	Chmn, President and ...	Option Exercise	M	6.78	45,368	307,595	0
Nov 10 2004	GENZ	GENZYME CORP	TERMEER HENRI A	Chmn, President and ...	Option Exercise	M	6.78	74,632	506,005	45,368
Nov 10 2004	GENZ	GENZYME CORP	TERMEER HENRI A	Chmn, President and ...	Sell	S	55.04	45,368	2,497,055	684,047	729.4 K to 684 K (-6.22 %)
Nov 10 2004	GENZ	GENZYME CORP	TERMEER HENRI A	Chmn, President and ...	Buy	M	6.78	45,368	307,595	729,415	684 K to 729.4 K (+6.63 %)
Nov 10 2004	GENZ	GENZYME CORP	TERMEER HENRI A	Chmn, President and ...	Sell	S	55.00	74,632	4,104,760	684,047	758.7 K to 684 K (-9.84 %)
Nov 10 2004	GENZ	GENZYME CORP	TERMEER HENRI A	Chmn, President and ...	Buy	M	6.78	74,632	506,005	758,679	684 K to 758.7 K (+10.91 %)
Oct 04 2004	GENZ	GENZYME CORP	MCGILLICUDY CORNELIUS III	Director	Option Exercise	A	0.00	227	0	227
Nov 08 2004	GENZ	GENZYME CORP	CARPENTER ROBERT J	Director	Option Exercise	M	6.81	4,400	29,964	0
Nov 08 2004	GENZ	GENZYME CORP	CARPENTER ROBERT J	Director	Sell	S	56.00	4,400	246,400	45,771	50.2 K to 45.8 K (-8.77 %)
Nov 08 2004	GENZ	GENZYME CORP	CARPENTER ROBERT J	Director	Buy	M	6.81	4,400	29,964	50,171	45.8 K to 50.2 K (+9.61 %)
Oct 04 2004	GENZ	GENZYME CORP	BERTHIAUME DOUGLAS A	Director	Option Exercise	A	0.00	189	0	189
Sep 20 2004	GENZ	GENZYME CORP	MCGILLICUDY CORNELIUS III	Director	Sell	S	53.96	2,000	107,920	0	2 K to 0 (-100.00 %)
Sep 15 2004	GENZ	GENZYME CORP	ANAGNOSTOPOULOS CONSTANTINE E	Director	Option Exercise	M	15.13	12,100	183,073	0
Sep 15 2004	GENZ	GENZYME CORP	ANAGNOSTOPOULOS CONSTANTINE E	Director	Sell	S	54.72	12,100	662,112	21,089	33.2 K to 21.1 K (-36.46 %)
Sep 15 2004	GENZ	GENZYME CORP	ANAGNOSTOPOULOS CONSTANTINE E	Director	Buy	M	15.13	12,100	183,073	33,189	21.1 K to 33.2 K (+57.38 %)
Sep 14 2004	GENZ	GENZYME CORP	ANAGNOSTOPOULOS CONSTANTINE E	Director	Option Exercise	M	15.13	11,900	180,047	12,100
Sep 14 2004	GENZ	GENZYME CORP	ANAGNOSTOPOULOS CONSTANTINE E	Director	Sell	S	54.89	11,900	653,191	21,087	33 K to 21.1 K (-36.07 %)
Sep 14 2004	GENZ	GENZYME CORP	ANAGNOSTOPOULOS CONSTANTINE E	Director	Buy	M	15.13	11,900	180,047	32,987	21.1 K to 33 K (+56.43 %)
Sep 14 2004	GENZ	GENZYME CORP	BLAIR HENRY E	Director	Option Exercise	M	9.72	19,200	186,624	0
Sep 14 2004	GENZ	GENZYME CORP	BLAIR HENRY E	Director	Sell	S	54.75	19,200	1,051,200	6,227	25.4 K to 6.2 K (-75.51 %)
Sep 14 2004	GENZ	GENZYME CORP	BLAIR HENRY E	Director	Buy	M	9.72	19,200	186,624	25,427	6.2 K to 25.4 K (+308.33 %)
Aug 30 2004	GENZ	GENZYME CORP	CARPENTER ROBERT J	Director	Option Exercise	M	6.81	4,200	28,602	4,400
Aug 30 2004	GENZ	GENZYME CORP	CARPENTER ROBERT J	Director	Sell	S	54.00	4,200	226,800	45,769	50 K to 45.8 K (-8.41 %)
Aug 30 2004	GENZ	GENZYME CORP	CARPENTER ROBERT J	Director	Buy	M	6.81	4,200	28,602	49,969	45.8 K to 50 K (+9.18 %)
Aug 30 2004	GENZ	GENZYME CORP	CARPENTER ROBERT J	Director	Gift	G	0.00	250	0	45,769	46 K to 45.8 K (-0.54 %)
Aug 30 2004	GENZ	GENZYME CORP	CARPENTER ROBERT J	Director	Gift	G	0.00	200	0	46,019	46.2 K to 46 K (-0.43 %)
Aug 23 2004	GENZ	GENZYME CORP	SMITH ALAN E	Senior Vice Preside ...	Option Exercise	M	15.31	13,169	201,617	13,169
Aug 23 2004	GENZ	GENZYME CORP	SMITH ALAN E	Senior Vice Preside ...	Sell	S	52.00	13,169	684,788	30,892	44.1 K to 30.9 K (-29.89 %)
Aug 23 2004	GENZ	GENZYME CORP	SMITH ALAN E	Senior Vice Preside ...	Buy	M	15.31	13,169	201,617	44,061	30.9 K to 44.1 K (+42.63 %)
Aug 02 2004	GENZ	GENZYME CORP	CARPENTER ROBERT J	Director	Option Exercise	M	6.81	4,200	28,602	8,600
Aug 02 2004	GENZ	GENZYME CORP	CARPENTER ROBERT J	Director	Sell	S	52.00	4,200	218,400	46,219	50.4 K to 46.2 K (-8.33 %)
Aug 02 2004	GENZ	GENZYME CORP	CARPENTER ROBERT J	Director	Buy	M	6.81	4,200	28,602	50,419	46.2 K to 50.4 K (+9.09 %)
Jul 27 2004	GENZ	GENZYME CORP	MOSCICKI RICHARD A	Senior Vice Preside ...	Option Exercise	M	15.31	26,338	403,235	0
Jul 27 2004	GENZ	GENZYME CORP	MOSCICKI RICHARD A	Senior Vice Preside ...	Option Exercise	M	15.13	1,312	19,851	0
Jul 27 2004	GENZ	GENZYME CORP	MOSCICKI RICHARD A	Senior Vice Preside ...	Option Exercise	M	13.78	13,592	187,298	0
Jul 27 2004	GENZ	GENZYME CORP	MOSCICKI RICHARD A	Senior Vice Preside ...	Option Exercise	M	9.72	380	3,694	0
Jul 27 2004	GENZ	GENZYME CORP	MOSCICKI RICHARD A	Senior Vice Preside ...	Sell	S	50.85	400	20,340	14,190	14.6 K to 14.2 K (-2.74 %)
Jul 27 2004	GENZ	GENZYME CORP	MOSCICKI RICHARD A	Senior Vice Preside ...	Sell	S	50.83	1,100	55,913	14,590	15.7 K to 14.6 K (-7.01 %)
Jul 27 2004	GENZ	GENZYME CORP	MOSCICKI RICHARD A	Senior Vice Preside ...	Sell	S	50.81	1,300	66,053	15,690	17 K to 15.7 K (-7.65 %)
Jul 27 2004	GENZ	GENZYME CORP	MOSCICKI RICHARD A	Senior Vice Preside ...	Sell	S	50.78	200	10,156	16,990	17.2 K to 17 K (-1.16 %)
Jul 27 2004	GENZ	GENZYME CORP	MOSCICKI RICHARD A	Senior Vice Preside ...	Sell	S	50.77	600	30,462	17,190	17.8 K to 17.2 K (-3.37 %)
Jul 27 2004	GENZ	GENZYME CORP	MOSCICKI RICHARD A	Senior Vice Preside ...	Sell	S	50.76	622	31,573	17,790	18.4 K to 17.8 K (-3.38 %)
Jul 27 2004	GENZ	GENZYME CORP	MOSCICKI RICHARD A	Senior Vice Preside ...	Sell	S	50.75	300	15,225	18,412	18.7 K to 18.4 K (-1.60 %)
Jul 27 2004	GENZ	GENZYME CORP	MOSCICKI RICHARD A	Senior Vice Preside ...	Sell	S	50.74	200	10,148	18,712	18.9 K to 18.7 K (-1.06 %)
Jul 27 2004	GENZ	GENZYME CORP	MOSCICKI RICHARD A	Senior Vice Preside ...	Sell	S	50.73	2,550	129,362	18,912	21.5 K to 18.9 K (-11.88 %)
Jul 27 2004	GENZ	GENZYME CORP	MOSCICKI RICHARD A	Senior Vice Preside ...	Sell	S	50.71	100	5,071	21,462	21.6 K to 21.5 K (-0.46 %)
Jul 27 2004	GENZ	GENZYME CORP	MOSCICKI RICHARD A	Senior Vice Preside ...	Sell	S	50.70	5,000	253,500	21,562	26.6 K to 21.6 K (-18.82 %)
Jul 27 2004	GENZ	GENZYME CORP	MOSCICKI RICHARD A	Senior Vice Preside ...	Sell	S	50.69	78	3,954	26,562	26.6 K to 26.6 K (-0.29 %)
Jul 27 2004	GENZ	GENZYME CORP	MOSCICKI RICHARD A	Senior Vice Preside ...	Sell	S	50.68	100	5,068	26,640	26.7 K to 26.6 K (-0.37 %)
Jul 27 2004	GENZ	GENZYME CORP	MOSCICKI RICHARD A	Senior Vice Preside ...	Sell	S	50.66	23,565	1,193,803	26,740	50.3 K to 26.7 K (-46.84 %)
Jul 27 2004	GENZ	GENZYME CORP	MOSCICKI RICHARD A	Senior Vice Preside ...	Buy	M	15.31	26,338	403,235	50,305	24 K to 50.3 K (+109.89 %)
Jul 27 2004	GENZ	GENZYME CORP	MOSCICKI RICHARD A	Senior Vice Preside ...	Buy	M	15.13	1,312	19,851	23,967	22.7 K to 24 K (+5.79 %)
Jul 27 2004	GENZ	GENZYME CORP	MOSCICKI RICHARD A	Senior Vice Preside ...	Buy	M	13.78	13,592	187,298	22,655	9.1 K to 22.7 K (+149.97 %)
Jul 27 2004	GENZ	GENZYME CORP	MOSCICKI RICHARD A	Senior Vice Preside ...	Buy	M	9.72	380	3,694	9,063	8.7 K to 9.1 K (+4.38 %)
Jul 21 2004	GENZ	GENZYME CORP	SMITH ALAN E	Senior Vice Preside ...	Option Exercise	M	15.13	3,378	51,109	3,378
Jul 21 2004	GENZ	GENZYME CORP	SMITH ALAN E	Senior Vice Preside ...	Option Exercise	M	14.00	31,818	445,452	31,818
Jul 21 2004	GENZ	GENZYME CORP	SMITH ALAN E	Senior Vice Preside ...	Sell	S	51.53	3,378	174,068	30,885	34.3 K to 30.9 K (-9.86 %)
Jul 21 2004	GENZ	GENZYME CORP	SMITH ALAN E	Senior Vice Preside ...	Buy	M	15.13	3,378	51,109	34,263	30.9 K to 34.3 K (+10.94 %)
Jul 21 2004	GENZ	GENZYME CORP	SMITH ALAN E	Senior Vice Preside ...	Sell	S	51.53	31,818	1,639,582	30,885	62.7 K to 30.9 K (-50.74 %)
Jul 21 2004	GENZ	GENZYME CORP	SMITH ALAN E	Senior Vice Preside ...	Buy	M	14.00	31,818	445,452	62,703	30.9 K to 62.7 K (+103.02 %)
Jul 01 2004	GENZ	GENZYME CORP	MCGILLICUDY CORNELIUS III	Director	Option Exercise	A	0.00	252	0	252
Jul 01 2004	GENZ	GENZYME CORP	BERTHIAUME DOUGLAS A	Director	Option Exercise	A	0.00	275	0	275
Jun 01 2004	GENZ	GENZYME CORP	WYZGA MICHAEL S	Executive VP and CF ...	Option Exercise	A	43.90	81,000	3,555,900	81,000
Jun 01 2004	GENZ	GENZYME CORP	SMITH ALAN E	Senior Vice Preside ...	Option Exercise	A	43.90	57,000	2,502,300	57,000
Jun 01 2004	GENZ	GENZYME CORP	MOSCICKI RICHARD A	Senior Vice Preside ...	Option Exercise	A	43.90	57,000	2,502,300	57,000
Jun 01 2004	GENZ	GENZYME CORP	MOSCICKI RICHARD A	Senior Vice Preside ...	Gift	G	0.00	30	0	8,350	8.4 K to 8.4 K (-0.36 %)
Jun 01 2004	GENZ	GENZYME CORP	MOSCICKI RICHARD A	Senior Vice Preside ...	Gift	G	0.00	92	0	8,380	8.5 K to 8.4 K (-1.09 %)
Jun 01 2004	GENZ	GENZYME CORP	MOSCICKI RICHARD A	Senior Vice Preside ...	Gift	G	0.00	37	0	8,472	8.5 K to 8.5 K (-0.43 %)
Jun 01 2004	GENZ	GENZYME CORP	GEMAYEL GEORGES	Executive Vice Pres ...	Option Exercise	A	43.90	69,615	3,056,099	69,615
Jun 01 2004	GENZ	GENZYME CORP	GEMAYEL GEORGES	Executive Vice Pres ...	Option Exercise	A	43.90	11,385	499,802	11,385
Jun 01 2004	GENZ	GENZYME CORP	CSIMMA ZOLTAN A	Senior VP, Human Re ...	Option Exercise	A	43.90	41,000	1,799,900	41,000
Jun 01 2004	GENZ	GENZYME CORP	COLLIER EARL M JR	Executive Vice Pres ...	Option Exercise	A	43.90	81,000	3,555,900	81,000
Jun 01 2004	GENZ	GENZYME CORP	WIRTH PETER	Executive Vice Pres ...	Option Exercise	A	43.90	81,000	3,555,900	81,000
Jun 01 2004	GENZ	GENZYME CORP	TERMEER HENRI A	Chmn, President and ...	Option Exercise	A	43.90	460,000	20,194,000	460,000
Jun 01 2004	GENZ	GENZYME CORP	MCGILLICUDY CORNELIUS III	Director	Option Exercise	A	43.90	9,000	395,100	9,000
Jun 01 2004	GENZ	GENZYME CORP	DZAU VICTOR J	Director	Option Exercise	A	43.90	9,000	395,100	9,000
Jun 01 2004	GENZ	GENZYME CORP	CARPENTER ROBERT J	Director	Option Exercise	A	43.90	9,000	395,100	9,000
Jun 01 2004	GENZ	GENZYME CORP	COONEY CHARLES L	Director	Option Exercise	A	43.90	9,000	395,100	9,000
Jun 01 2004	GENZ	GENZYME CORP	BOUDREAUX GAIL	Director	Option Exercise	A	43.90	15,000	658,500	15,000
Jun 01 2004	GENZ	GENZYME CORP	BLAIR HENRY E	Director	Option Exercise	A	43.90	15,000	658,500	15,000
Jun 01 2004	GENZ	GENZYME CORP	BERTHIAUME DOUGLAS A	Director	Option Exercise	A	43.90	15,000	658,500	15,000
Jun 01 2004	GENZ	GENZYME CORP	ANAGNOSTOPOULOS CONSTANTINE E	Director	Option Exercise	A	43.90	9,000	395,100	9,000
Apr 21 2004	GENZ	GENZYME CORP	TERMEER HENRI A	Chmn, President and ...	Option Exercise	M	7.36	53,620	394,643	0
Apr 21 2004	GENZ	GENZYME CORP	TERMEER HENRI A	Chmn, President and ...	Sell	S	47.44	20,110	954,018	684,018	704.1 K to 684 K (-2.86 %)
Apr 21 2004	GENZ	GENZYME CORP	TERMEER HENRI A	Chmn, President and ...	Sell	S	48.07	33,510	1,610,826	704,128	737.6 K to 704.1 K (-4.54 %)
Apr 21 2004	GENZ	GENZYME CORP	TERMEER HENRI A	Chmn, President and ...	Buy	M	7.36	53,620	394,643	737,638	684 K to 737.6 K (+7.84 %)
Apr 01 2004	GENZ	GENZYME CORP	MCGILLICUDY CORNELIUS III	Director	Option Exercise	A	0.00	327	0	327
Feb 24 2004	GENZ	GENZYME CORP	BERTHIAUME DOUGLAS A	Director	Option Exercise	M	0.00	258	0	516
Jan 26 2004	GENZ	GENZYME CORP	WIRTH PETER	Executive Vice Pres ...	Option Exercise	M	14.00	50,000	700,000	0
Jan 26 2004	GENZ	GENZYME CORP	WIRTH PETER	Executive Vice Pres ...	Sell	S	56.04	50,000	2,802,000	7,307	57.3 K to 7.3 K (-87.25 %)
Jan 26 2004	GENZ	GENZYME CORP	WIRTH PETER	Executive Vice Pres ...	Buy	M	14.00	50,000	700,000	57,307	7.3 K to 57.3 K (+684.28 %)
Dec 17 2003	GENZ	GENZYME CORP	VAN HEEK G JAN	Executive Vice Pres ...	Option Exercise	M	46.24	10,800	499,392	0
Dec 17 2003	GENZ	GENZYME CORP	VAN HEEK G JAN	Executive Vice Pres ...	Sell	S	47.52	100	4,752	24,371	24.5 K to 24.4 K (-0.41 %)
Dec 17 2003	GENZ	GENZYME CORP	VAN HEEK G JAN	Executive Vice Pres ...	Sell	S	47.50	500	23,750	24,471	25 K to 24.5 K (-2.00 %)
Dec 17 2003	GENZ	GENZYME CORP	VAN HEEK G JAN	Executive Vice Pres ...	Sell	S	47.45	100	4,745	24,971	25.1 K to 25 K (-0.40 %)
Dec 17 2003	GENZ	GENZYME CORP	VAN HEEK G JAN	Executive Vice Pres ...	Sell	S	47.43	1,200	56,916	25,071	26.3 K to 25.1 K (-4.57 %)
Dec 17 2003	GENZ	GENZYME CORP	VAN HEEK G JAN	Executive Vice Pres ...	Sell	S	47.41	3,600	170,676	26,271	29.9 K to 26.3 K (-12.05 %)
Dec 17 2003	GENZ	GENZYME CORP	VAN HEEK G JAN	Executive Vice Pres ...	Sell	S	47.36	100	4,736	29,871	30 K to 29.9 K (-0.33 %)
Dec 17 2003	GENZ	GENZYME CORP	VAN HEEK G JAN	Executive Vice Pres ...	Sell	S	47.35	1,300	61,555	29,971	31.3 K to 30 K (-4.16 %)
Dec 17 2003	GENZ	GENZYME CORP	VAN HEEK G JAN	Executive Vice Pres ...	Sell	S	47.32	200	9,464	31,271	31.5 K to 31.3 K (-0.64 %)
Dec 17 2003	GENZ	GENZYME CORP	VAN HEEK G JAN	Executive Vice Pres ...	Sell	S	47.31	2,067	97,790	31,471	33.5 K to 31.5 K (-6.16 %)
Dec 17 2003	GENZ	GENZYME CORP	VAN HEEK G JAN	Executive Vice Pres ...	Sell	S	47.29	100	4,729	33,538	33.6 K to 33.5 K (-0.30 %)
Dec 17 2003	GENZ	GENZYME CORP	VAN HEEK G JAN	Executive Vice Pres ...	Sell	S	47.26	500	23,630	33,638	34.1 K to 33.6 K (-1.46 %)
Dec 17 2003	GENZ	GENZYME CORP	VAN HEEK G JAN	Executive Vice Pres ...	Sell	S	47.24	100	4,724	34,138	34.2 K to 34.1 K (-0.29 %)
Dec 17 2003	GENZ	GENZYME CORP	VAN HEEK G JAN	Executive Vice Pres ...	Sell	S	47.23	100	4,723	34,238	34.3 K to 34.2 K (-0.29 %)
Dec 17 2003	GENZ	GENZYME CORP	VAN HEEK G JAN	Executive Vice Pres ...	Sell	S	47.22	400	18,888	34,338	34.7 K to 34.3 K (-1.15 %)
Dec 17 2003	GENZ	GENZYME CORP	VAN HEEK G JAN	Executive Vice Pres ...	Sell	S	47.21	100	4,721	34,738	34.8 K to 34.7 K (-0.29 %)
Dec 17 2003	GENZ	GENZYME CORP	VAN HEEK G JAN	Executive Vice Pres ...	Sell	S	47.20	100	4,720	34,838	34.9 K to 34.8 K (-0.29 %)
Dec 17 2003	GENZ	GENZYME CORP	VAN HEEK G JAN	Executive Vice Pres ...	Sell	S	47.19	100	4,719	34,938	35 K to 34.9 K (-0.29 %)
Dec 17 2003	GENZ	GENZYME CORP	VAN HEEK G JAN	Executive Vice Pres ...	Sell	S	47.18	100	4,718	35,038	35.1 K to 35 K (-0.28 %)
Dec 17 2003	GENZ	GENZYME CORP	VAN HEEK G JAN	Executive Vice Pres ...	Sell	S	47.16	33	1,556	35,138	35.2 K to 35.1 K (-0.09 %)
Dec 17 2003	GENZ	GENZYME CORP	VAN HEEK G JAN	Executive Vice Pres ...	Buy	M	46.24	10,800	499,392	35,171	24.4 K to 35.2 K (+44.31 %)
Dec 17 2003	GENZ	GENZYME CORP	COLLIER EARL M JR	Executive Vice Pres ...	Sell	S	47.10	1,235	58,169	3	1.2 K to 3 (-99.76 %)
Dec 09 2003	GENZ	GENZYME CORP	BLAIR HENRY E	Director	Sell	S	46.21	2,000	92,420	6,223	8.2 K to 6.2 K (-24.32 %)
Dec 09 2003	GENZ	GENZYME CORP	BLAIR HENRY E	Director	Sell	S	46.20	900	41,580	8,223	9.1 K to 8.2 K (-9.87 %)
Dec 09 2003	GENZ	GENZYME CORP	BLAIR HENRY E	Director	Sell	S	46.19	1,100	50,809	9,123	10.2 K to 9.1 K (-10.76 %)
Nov 17 2003	GENZ	GENZYME CORP	BLAIR HENRY E	Director	Sell	S	44.70	2,200	98,340	10,223	12.4 K to 10.2 K (-17.71 %)
Oct 22 2003	GENZ	GENZYME CORP	TERMEER HENRI A	Chmn, President and ...	Option Exercise	M	7.27	117,900	857,133	0
Oct 22 2003	GENZ	GENZYME CORP	TERMEER HENRI A	Chmn, President and ...	Option Exercise	M	7.27	182,100	1,323,867	117,900
Oct 22 2003	GENZ	GENZYME CORP	TERMEER HENRI A	Chmn, President and ...	Sell	S	49.00	100,000	4,900,000	686,129	786.1 K to 686.1 K (-12.72 %)
Oct 22 2003	GENZ	GENZYME CORP	TERMEER HENRI A	Chmn, President and ...	Sell	S	48.72	17,900	872,088	786,129	804 K to 786.1 K (-2.23 %)
Oct 22 2003	GENZ	GENZYME CORP	TERMEER HENRI A	Chmn, President and ...	Buy	M	7.27	117,900	857,133	804,029	686.1 K to 804 K (+17.18 %)
Oct 22 2003	GENZ	GENZYME CORP	TERMEER HENRI A	Chmn, President and ...	Sell	S	48.37	82,100	3,971,177	686,129	768.2 K to 686.1 K (-10.69 %)
Oct 22 2003	GENZ	GENZYME CORP	TERMEER HENRI A	Chmn, President and ...	Buy	M	7.27	182,100	1,323,867	768,229	586.1 K to 768.2 K (+31.07 %)
Oct 22 2003	GENZ	GENZYME CORP	TERMEER HENRI A	Chmn, President and ...	Option Exercise	M	7.27	117,900	857,133	0
Oct 22 2003	GENZ	GENZYME CORP	TERMEER HENRI A	Chmn, President and ...	Option Exercise	M	7.27	182,100	1,323,867	117,900
Oct 22 2003	GENZ	GENZYME CORP	TERMEER HENRI A	Chmn, President and ...	Sell	S	49.00	100,000	4,900,000	686,129	786.1 K to 686.1 K (-12.72 %)
Oct 22 2003	GENZ	GENZYME CORP	TERMEER HENRI A	Chmn, President and ...	Sell	S	48.72	17,900	872,088	786,129	804 K to 786.1 K (-2.23 %)
Oct 22 2003	GENZ	GENZYME CORP	TERMEER HENRI A	Chmn, President and ...	Buy	M	7.27	117,900	857,133	804,029	686.1 K to 804 K (+17.18 %)
Oct 22 2003	GENZ	GENZYME CORP	TERMEER HENRI A	Chmn, President and ...	Sell	S	48.37	82,100	3,971,177	686,129	768.2 K to 686.1 K (-10.69 %)
Oct 22 2003	GENZ	GENZYME CORP	TERMEER HENRI A	Chmn, President and ...	Buy	M	7.27	182,100	1,323,867	768,229	586.1 K to 768.2 K (+31.07 %)
Oct 22 2003	GENZ	GENZYME CORP	TERMEER HENRI A	Chmn, President and ...	Option Exercise	M	7.27	117,900	857,133	0
Oct 22 2003	GENZ	GENZYME CORP	TERMEER HENRI A	Chmn, President and ...	Option Exercise	M	7.27	182,100	1,323,867	117,900
Oct 22 2003	GENZ	GENZYME CORP	TERMEER HENRI A	Chmn, President and ...	Sell	S	49.00	100,000	4,900,000	686,129	786.1 K to 686.1 K (-12.72 %)
Oct 22 2003	GENZ	GENZYME CORP	TERMEER HENRI A	Chmn, President and ...	Sell	S	48.72	17,900	872,088	786,129	804 K to 786.1 K (-2.23 %)
Oct 22 2003	GENZ	GENZYME CORP	TERMEER HENRI A	Chmn, President and ...	Buy	M	7.27	117,900	857,133	804,029	686.1 K to 804 K (+17.18 %)

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